#include "stdio_impl.h"
#include <wchar.h>

wint_t __fgetwc_unlocked(FILE *);

wchar_t *fgetws(wchar_t *restrict s, int n, FILE *restrict f)
{
    wchar_t *p = s;

    if (!n--) return s;

    FLOCK(f);

    for (; n; n--) {
        wint_t c = __fgetwc_unlocked(f);
        if (c == WEOF) break;
        *p++ = c;
        if (c == '\n') break;
    }
    *p = 0;
    if (ferror(f)) p = s;

    FUNLOCK(f);

    return (p == s) ? NULL : s;
}

weak_alias(fgetws, fgetws_unlocked);
